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Discussion Forum

Portable Air Tank

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LC Indiana

05-29-2001 12:01:56




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I know there must be a way, and someone here should know. How can an old L.P. tank be converted into a portable air tank? I know you would have to rework the valve in some way because of the left-hand threads on an LP tank.




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Richard Fazio

05-30-2001 10:02:23




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 Re: Portable Air Tank in reply to LC Indiana, 05-29-2001 12:01:56  
I made myself an air tank from an old propane tank. It's easy, I made sure it was empty and unscrewed the entire valve assembly. The tank had regular pipe threads. I screwed in a 3/4" valve and necked down to 1/4" for the air connector. Then I plugged in a 1/4" flex hose. It's perfect for that low or flat tire out in the field somewhere. I only fill to 100 pounds. The tank is over due for refill of propane, but still in good shape. The only negative is you still get a little of that propane stink from the tank, no matter how many times I fill it.

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rhudson

05-30-2001 18:55:23




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 Re: Re: Portable Air Tank in reply to Richard Fazio, 05-30-2001 10:02:23  
Richard, I think that smell is a chemical added to LP to make it smell. (works doesn't it) we cut a tank to make a grill once. the smell came from an oily substance that coated the inside of the tank and had to be washed out. by the way some of out local fire departments use the ends cut out of large tanks for stew pots. we made the electric stirers for them. now even more volenteers show up at stew making time to tell lies.

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paul

05-30-2001 23:03:12




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 Re: Re: Re: Portable Air Tank in reply to rhudson, 05-30-2001 18:55:23  
I'll never try anyhow, but may I ask, how do you cut an LP tank apart & blow yourself to kingdom come? I'm thinking it hard to flush all the fumes out....

--->Paul



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rhudson

06-01-2001 23:24:32




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 Re: Re: Re: Re: Portable Air Tank in reply to paul, 05-30-2001 23:03:12  
Paul, yea, seems stupid doesn't it. we took all fitting out of tank and let it sit for a month. the smell was just as strong on day 28 as day one. sit tank up and filled it with water, left maybe a 1 inch air space at top. made a pyrotechnics time delay fuse (salem and pack of matches). got no reaction. then i cut a slot in it with a plasma arc. i have lots of horror stories of fuel and chemical tanks. but none of them involved me, so far.

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RayP(MI)

05-29-2001 18:45:43




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 Re: Portable Air Tank in reply to LC Indiana, 05-29-2001 12:01:56  
Somewhere I saw a kit for this, think they removed the entire valve assembly, and replaced it with "air friendly" fittings. Cost was almost as much as a commercial made tank however. I would suggest you are better off to just buy an air tank, and have something you can depend on. Those used propane tanks can get "iffy" after a while, and should be pressure tested, before you use them.



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bill b va

06-02-2001 16:47:20




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 Re: Re: Portable Air Tank in reply to RayP(MI), 05-29-2001 18:45:43  

one way to make a tank safe to cut is find a safe place in a open field pile up a lot of brush /old lumber /ect remove tank fittings put tank on top of pile start fire and get way way back until fire burns out . i did this with a 275 gal. fuel tank .it did a lot of whissling and low roaring but didnt blow . cleaned off the paint and got rid of the odor bill bva



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